Here’s an example of what I’ve done - as ‘simple’ as copying the text into my CMS (Wordpress) and then polishing as I read through it with some headings and graphics to make it more readable - https://jacobaldridge.com/dont-waste-a-good-recession/is-thi...
Still a 30 minute exercise, but that’s now a ~5,000 word article on the subject plus graphics plus a video.
As someone who's used the text transcripts to "search" through Youtube video content, I'd say you're on the right track.